全文获取类型
收费全文 | 3749篇 |
免费 | 348篇 |
国内免费 | 1篇 |
专业分类
4098篇 |
出版年
2023年 | 54篇 |
2022年 | 12篇 |
2021年 | 36篇 |
2020年 | 154篇 |
2019年 | 84篇 |
2018年 | 93篇 |
2017年 | 147篇 |
2016年 | 168篇 |
2015年 | 145篇 |
2014年 | 142篇 |
2013年 | 578篇 |
2012年 | 177篇 |
2011年 | 139篇 |
2010年 | 114篇 |
2009年 | 126篇 |
2008年 | 144篇 |
2007年 | 156篇 |
2006年 | 137篇 |
2005年 | 103篇 |
2004年 | 101篇 |
2003年 | 100篇 |
2002年 | 87篇 |
2001年 | 42篇 |
2000年 | 42篇 |
1999年 | 41篇 |
1998年 | 43篇 |
1997年 | 39篇 |
1996年 | 69篇 |
1995年 | 59篇 |
1994年 | 53篇 |
1993年 | 53篇 |
1992年 | 60篇 |
1991年 | 54篇 |
1990年 | 57篇 |
1989年 | 41篇 |
1988年 | 38篇 |
1987年 | 30篇 |
1986年 | 35篇 |
1985年 | 22篇 |
1984年 | 19篇 |
1983年 | 19篇 |
1982年 | 39篇 |
1981年 | 28篇 |
1980年 | 25篇 |
1979年 | 34篇 |
1978年 | 36篇 |
1977年 | 32篇 |
1976年 | 19篇 |
1975年 | 13篇 |
1974年 | 16篇 |
排序方式: 共有4098条查询结果,搜索用时 15 毫秒
871.
An Examination of the Connections Between Eating Disorder Symptoms,Perceived Burdensomeness,Thwarted Belongingness,and Suicide Risk Among Undergraduate Students 下载免费PDF全文
Mun Yee Kwan MS Kathryn H. Gordon PhD Darren L. Carter MS Allison M. Minnich MS Steffanie D. Grossman PhD 《Suicide & life-threatening behavior》2017,47(4):493-508
Suicide attempts and premature mortality due to suicide are elevated in people with eating disorders. Informed by the interpersonal theory of suicide, two studies examined the role of perceived burdensomeness and thwarted belongingness in explaining the association between eating disorder symptoms and suicide risk. Results indicated that various eating disorder symptoms had an indirect effect on suicide risk through perceived burdensomeness and thwarted belongingness. Targeting perceived burdensomeness and thwarted belongingness may be useful for decreasing suicide risk among undergraduates with eating disorder symptoms. 相似文献
872.
873.
874.
Rory C. O'Connor PhD Susan Rasmussen PhD Keith Hawton DSc 《Suicide & life-threatening behavior》2009,39(4):364-375
Few studies have investigated the extent to which psychosocial/psychological factors are associated with the prediction of deliberate self‐harm (DSH) among adolescents. In this study, 737 pupils aged 15–16 years completed a lifestyle and coping survey at time one and 500 were followed up six months later. Six point two percent of the respondents (n = 31) reported an act of DSH between Time 1 and Time 2. In multivariate analyses, worries about sexual orientation, history of sexual abuse, family DSH, anxiety, and self‐esteem were associated with repeat DSH during the course of the study, but history of sexual abuse was the only factor predictive of first‐time DSH. The findings suggest that school‐based programs focused on how young people cope with psychosocial stressors may offer promise. 相似文献
875.
876.
877.
W Jack Rejeski Brian C Focht Steven P Messier Tim Morgan Marco Pahor Brenda Penninx 《Health psychology》2002,21(5):419-426
This study examined the effects of dietary weight loss and exercise on the health-related quality of life (HRQL) of overweight and obese, older adults with knee osteoarthritis. A total of 316 older men and women with documented evidence of knee osteoarthritis were randomly assigned to 1 of 4 18-month interventions: dietary weight loss, exercise, dietary weight loss and exercise, or healthy lifestyle control. Measures included the SF-36 Health Survey and satisfaction with body function and appearance. Results revealed that the combined diet and exercise intervention had the most consistent, positive effect on HRQL compared with the control group; however, findings were restricted to measures of physical health or psychological outcomes that are related to the physical self. 相似文献
878.
879.
Media recommendations on suicide reporting are available in many countries and in different languages. Hong Kong newspapers have been found to be noncompliant with WHO recommendations. A booklet containing WHO media guidelines Preventing Suicide: A Resource for Media Professionals, and an awareness campaign were launched in November 2004 in Hong Kong. Content analysis was then conducted to compare the reporting of suicide news before and after the launch. Results indicate that certain reporting styles were changed in accordance with the recommendations; namely, lessened use of pictorial presentations and headlines mentioning suicides. Most of the changes were attributed to the tabloid‐style newspapers. This study suggests that programs to promote media recommendations tailored for journalists appear to be efficacious in altering their way of reporting. 相似文献
880.